Plastic shuttle



Patented July 15, 1947- UNITED. srAj'rEs `1'irl'lsm oF-Flca l rLAs'rrc SHUTTLE Paul Bi wilson, Portisnaoreg., assigner u Harold D', Wolgamohilortland, Oreg.

appucauonmly 5, 1945`,fseria1`N d. 603,335,

.s claims. (ci. 13s-,196i

.This invention relates to a shuttle forl'use in looms and more especially 'to a plastic 'shuttle'.

It. is an object ofthis invention tol provide a plastic shuttle madel of Vplastic material` and molded into proper form, the plastic used being preferably Tenite which is a cellulosefacetobutyrate product. Itis of'ayellowish translucent -color and is admirably adapted for molding into shuttles. l n A,

Y is another object of this invention to provide a shuttle for looms molded from plastic material and having wear strips of other material such as wood molded thereinto.

, It is another object of this invention to-pro- Y vide `a shuttle molded' from plastic material and `having wear strips lsecured along the upperv and lowerv edges of each side thereof 'and 'extending to and curving into and beingcovered by a por- Vtion of the nose of the shuttle, together vwith additional wear strips if desired at the ends of the shuttle and on the upper'side thereof. i

It is another `object ofr this inventionto prof fvide a plastic shuttle for looms having weargstrips i of wood or other material differing in characteristic from the plastic-material for absorbing the wear or friction in thebox of the loom. Plas- ,tic might ,haveA av tendency to stick-'due to the friction of .the binder and the box front in boxployed in shaping the piece of Ywood into a shuttle' involves not Yonly highly skilled labor lbut also a great amount of time fabricating the shuttle ready for use. In addition, many -mills have equipped themselves withshuttle truing machines Y for reshaping and retrimming the shuttles with a vi'ew to balancing'the same; Vbut all have' been s `unsuccessful due to the varying in the density of the Vwood failing to give a perfectly balanced shuttle. s y

Furthermore, by the use of aplastic shuttle,

. Y z down and used over agaimjwhereas, in the case of a wooden shuttle, it has no salvage value whatever.

lByV providing a plasticshuttle, a shuttle is prol'vided which is uniform in weight and size and not onlyis harder to dent"l or damageby blows but also :by employing a plastic such as-Tenlte`. itv has a tendency to heal; that is, a. dent madev in it will, within the courseof on'eor two days or even'soonen have a tendency todisappear-due to the peculiar `character vof* this type of plastic;

By providing the hardwood stripsateach of the four corners ofvr the shuttle in cross-.section and extending over all portions of the shuttlewhich fengages the binder and box front of ahloom, the f wearf on the plastic is Veliminated as the wooden ystrips absorb all the wear yfrom boxing Ypf' the shuttle. t f

- These strips of n faceof .the plastic to allow air space between the shuttle body andthe shuttle box' which prevents the plastic from sticking or crawlingin the shuttle' f The wear strips of woodare preferablymade along thergrain so that there is no cross-grain, and this woodis molded into the plastic by dovetailing, byembedding the tip of screws in the I 'l wood and havingthe butts of the screws embedded f ing theshuttle at, each `*end of the lay of the' loom.A r'

Therefore I have show-n wooden strips yprojecting slightly beyondthe sides' of the shuttle :for v I absorbing this wear.V

in the plastic which ismolded to the strips, which Istrips cannot beseparated froml the plastic body. Thev endof the shuttleywhich 'isdisposed next provides a unitary. structure in which the wood to the battery end of the loomdurin'g'a transfer operation is provided with hardwood pins setting endwise thus saving `theplasticfroxn the Jar that f comes from the battery Vduringa transfer operationzand also lprotects the plastic from wear,

The points` of, lthe vshuttle are 'provided with 'Y small heads which arealSQ knurled and thek plastic' is molded around the knurled portions of these heads and this prevents the polntsfrom coming loose, as. the plastic isl cast around theknurled heads under pressure. l Y The plastic shuttle has molded thereinto a vstandard eye or 'threading 'device which is standard equipment vandneed 'not be described. Some ofthe objects of the invention having l been stated, otherfobjectswill appear asv the'r description proceeds when'taken inconne'ction with the accompanying drawings in which:v

VFigure lis a top plan View of animproved loom shuttle;i- Y fj Figure 2 is a viewv similar to Figure 1 but on a larger scale and havingV the central portion of when it does have to be discarded, it can be melted the shuttle broken away;

woodareV raised above the sury Y Figure 5 is a cross sectional detail viewy taken along the line -5 in Figure 2*; i v.

Figurev 6 is a crossse'ctional view 'similar' to the left handportion "of" Figure 4 and showing reenforcing* wires therein."

Referring more specifically`4 -to the drawings the numeral I0 indicates a plastic shuttle having metallic noses II and I2 at each end thereof`- molded from cellulose aceto-butyrate and having usually known as the nose points or noses of the shuttle. The shuttle has a.conventional shuttle` eye I'3 molded near one end thereof and has an In the drawings and specication there has been set forth a. preferred embodiment of the invention, and although specific terms are employed, they are used in a generic and descriptive sense only, and not for purposes of limitation, the scope of the invention being defined in the claims.

I claim: o i.

1. `A loom vshuttle having -its body ,portion molded from plastic material and having wear strips oliv a ydifferent material affixed to itsupper and lower edges at each/side thereof and having elongated cavity I4 in which a. bobbin or cop or quill is'adapted to be disposed.` The shuttle is also provided with a conventional forked spring clip having prongs I5 with internal vertically disposed grooves, not shown, for receiving a bobbinf transferred 'into the shuttle whichV also elects the oldbobbinfron the shuttle at the same operation.

This shuttle is also equipped v'with a metallic Vmember I6 ywhich lis securedto the plastic body by means'of a suitable bolt I1 which is conventional. The plastic body of theshuttle has four longitudinally extending wear strips 20,Y 2I, 22,

andy 2,3 nearthe upper and lower edges thereof and 'extending from'near one end of the shuttle tothe other, and ait eachend of the shuttle as at `2li, these wooden strips are directed into the plastic' portion and the ends are completely covered by" the plastic material lwhich isV moldedy f therearound.. The wooden strips are each pro-` 'vided Vwith longitudinally kextending dovetail grooves'on their inner surfaces, the grooves indicated at y21 'on their inner surfaces and also the proximate surfaces thereofhave grooves 28. into which thev plastic material is molded. A suitable f mold is provided into which the'bobbin holder I5, metallic member I6; the shuttle eye I3are positioned, as well as the wooden strips to 23, in-

clusive, and also the wooden strips 29 and 30 and the wooden strips 3 Il are positioned and then theplastic material is poured into the mold vand moldeduaround all of the above-named Vobjects and this is molded under pressure softhat when the mold is` removed, the completedshuttle as shownin"-the drawings is provided. l The strips 29 and 30 areprovidedfon the top' of the shuttle to provide wear strips andy they are secured in position by strips of wood being `dove- .o tailed incrosssection; that is, being broader at the bottom than at the top, andthe plastic ma;- terial is molded ytherearound; `If desired, all of the lwooden strips canv have small screws 33 screwed thereinto for a small distance with the Vheads left protruding and the plastic material is molded around the heads of the screws which n assist inholding the wooden strips in position,

although the dovetailing will hold them in posi-- tion and :the screws may not be necessary.

. Eachrend of the hardwood/strips 20 to 23,y inelusive, isbent inwardlyfrom the sides of the shuttle as at 'Aand is beveled away from the top and bottom edges of the shuttle so that they are completely'embedded in the plastic at each end thereof.V

theirl ends projecting into the body portion.

2. vA loom shuttle having its main body portion wear strips of wood embedded in and secured to the upper and lower side edges of the shuttle and `projecting -a slight distance beyond the outer "plastic walls of the shuttle.

3. A loom shuttle having its main body portion molded from cellulose aceto-butyrate and having `wear strips of wood embedded in and secured to the upper and lower side edges of the shuttle and projecting a slight distance beyond the outer plastic `walls of the shuttle, the ends of the .wooden `strips being curved. inwardly and completely covf ered by the plastic material.

4. A loom shuttle molded from cellulose acetobutyrate and having wooden wear strips secured `to the upper and lower outer edges thereof and Vtyrat'e body portion.

5. A loom shuttle molded from cellulose acetobutyrate and having wooden wear strips secured to the upper and lower outer edges thereof and extending along both sides of the shuttle and having the ends projecting inwardly vand completely embedded within the cellulose aceto-butyrate body portion, the nose of the shuttle having additionalwear strips embedded therein and held in position by having the cellulose aceto-butyrate v securely molded .therearound r moldedfrom cellulose aceto-butyrate'plastic and having wear `strips embedded in the'. upper and lower side edges of the body portion of the shuttleand extending from near one end of the shuttle to the. other end and having the ends com- .pletely rcovered'by the plastic material, said Wear strips having dovetailedfportions in their surfaces vwhich adjoin the plastic material whereby the plastic material is molded into the dovetailed slots inthewear strips to securely aiix the wear strips to the body portion of the shuttle. l r

. o. Y vPAUL vB; WILSON. I

lnlnvlinnivons orrnn The following references are of-record in the file of this patent:

o UNITED STATES PATENTS Number A Name Date 1,805,090 `Hills 1 May 2l, 1931 2,035,914 Olsen s Mar. 3l, 1936 FOREIGN PATENTS Number Country Date 21,144 Great Britain f- 1902 6,798 Great Britain 1389 502,120 Great Britain Mar. 13, 1939 

